Materials Literature
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For the two photochromic molecules, 3-benzoyl-2-benzyl-1-methyl-1H-quinolin-4-one (QC1) and 3-benzoyl-1,2-dibenzyl-1H-1,8-naphthyridin-4-one (QC18a) as well as the nonphotochromic 3-benzoyl-1-benzyl-2-methyl-1H-1,8-naphthyridin-4-one (QC18b), the full photochemical mechanism, which is based on the photoenolization pro…
The growth and oxygen adsorption of Ag on an ordered Al 2 O 3 film, prepared on Mo(110) substrate, have been studied in situ under ultrahigh-vacuum condition using X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and low-energy electron diffraction. The results show that Ag particles/clusters…
We introduce a toy model that contains the basic features of microphase separation in polymer gels: a stretched elastic network of Lennard-Jones particles, studied in two dimensions. When temperature is lowered below some value T *, attraction between particles dominates over both thermal motion and elastic forces, an…
Abstract The thermal oxidative stability and the effect of water on gas transport and mechanical properties of blends of polyamide 6 (PA6) with ethylene‐ co ‐vinyl alcohol (EVOH) and EVOH modified with carboxyl groups (EVOH‐COOH) have been investigated. The presence of EVOH reduces water vapor and oxygen gas permeabil…
Langmuir monolayers and LB films of the ring-shaped mixed-valence polyoxomolybdate [Mo142O429H10(H2O)49(CH3CO2)5(CH3CH2CO2)](30-) (Mo142) dissolved in the aqueous subphase have been successfully fabricated by using the adsorption properties of a DODA monolayer. Infrared and ultraviolet-visible spectroscopy of the LB f…
Three new radical salts, [DMT-TTF-(CONHMe) 2 ] 2 CuBr 4 ( 2 ), DMT-TTF-(CONHMe) 2 ·ClO 4 ( 3 ), and DMT-TTF-(CONHMe) 2 ·Br ( 4 ), have been obtained by reacting DMT-TTF-(CONHMe) 2 ( 1 ) with CuBr 2 and Cu(ClO 4 ) 2 (DMT-TTF = dimethylthio-tetrathiafulvalene). The [DMT-TTF-(CONHMe) 2 ] •+ cations of the three compounds…
The overall amino-acid sequence of MmcBC in Pelotomaculum thermopropionicum was substantially homologous (33%) to fumarase A in Escherichia coli, although its possible subunit structure was different from known fumarases and it lacked the fumarate-lyase signature sequence. Here, MmcBC in E. coli is expressed and chara…
Abstract Nitrogen‐ion beam pulses emitted from a low‐energy (1.45 kJ) Mather‐type plasma focus device are used for the surface modification of PTFE polymer specimens. The specimens, placed at a fixed position, are implanted using different number of pulses. Raman spectroscopy and XRD are employed to probe the structur…
The improvement of hydrophilicity and hemocompatibility of thermoplastic polyurethane (TPU) film was developed using surface modification of polyelectrolyte multilayers (PEMs) deposition. The polysaccharide PEMs included chitosan (CS, as a positive-charged agent) and dextran sulfate (DS, as a negative-charged and an a…
Abstract The photoluminescence of poly[2‐(3‐thienyl)ethyloxy‐4‐butylsulfonate)] (PTE‐BS) in aqueous solution increases threefold on addition of the surfactant tetrabutylammonium perchlorate (TBA). Furthermore, the luminescence of the PTE‐BS/TBA system is reduced by more than five times by the addition of small amounts…
The molecular organization of a mixed film, containing a water-soluble tetracationic porphyrin (TMPyP) and a p-tert-butyl calix[8]arene octacarboxylic acid derivative (C8A), at the air-water interface and on a solid support (LB film), has been investigated. Although the TMPyP aggregation was not detected at the air-wa…
A static light scattering (SLS) study of bovine serum albumin (BSA) mixtures with two anionic graft copolymers of poly(sodium acrylate-co-sodium 2-acrylamido-2-methyl-1-propanesulphonate)-graft-poly(N,N-dimethylacrylamide), with a high composition in poly(N,N-dimethylacrylamide) (PDMAM) side chains, revealed the forma…
We developed a technique for the local electrical detection of a plasmon resonance in a single metal nanoparticle. A gold nanoparticle is coupled to a GaAs photodetector placed in the particle's near field. Light scattered by the particle is coupled into the semiconductor cavity of the photodetector, providing efficie…
Abstract The plasma‐assisted process presented in this paper facilitates the deposition of nitrogen containing functional coatings on textiles. Low pressure RF plasma was used to deposit multi‐functional thin films, which have a high amine content. Either acetylene or ethylene were mixed with ammonia to obtain a cross…
This paper describes a novel synthetic strategy for the preparation of thiol end-functionalized poly(ethylene glycol) (PEG)- b -polyesters. Block copolymers containing an internal disulfide bond were prepared through the ring-opening polymerization of dl -lactide (LA) and ε-caprolactone (CL) employing a PEG disulfide…
Uniform zinc gallate (ZnGa 2 O 4 ) nanowires are successfully synthesized by a one-step simple thermal evaporation of a mixture of ZnO and Ga 2 O 3 powders under controlled conditions. Its morphology and microstructures were determined by X-ray powder diffraction, scanning electron microscopy, high-resolution transmis…
We study the structure and the dynamics in the formation of irreversible gels by means of molecular dynamics simulation of a model system where the gelation transition is due to the random percolation of permanent bonds between neighboring particles. We analyze the heterogeneities of the dynamics in terms of the fluct…
A $\ensuremath{\pi}$-shaped metallic metamaterial (geometrically, a combination medium of C-shaped resonators and continuous wires) is proposed to numerically investigate its transmission band near the resonant frequency, where otherwise it should be a negative-permeability (or negative-permittivity) stop band if eith…
The formation of polyelectrolyte multilayers (PEMs) is investigated using a silicon-on-insulator based thin film resistor which is sensitive to variations of the surface potential. The buildup of the PEMs at the silicon oxide surface of the device can be observed in real time as defined potential shifts. The influence…
We present a theoretical investigation of an electrically controllable spin filter based on multiferroic tunneling junction. This spin filter combines the exchange splitting of ferromagnets and asymmetry in energy potential due to the screening of ferroelectric polarization charges at electrodes. Transfer matrix calcu…